baber/WOPTO huggingface dataset:
Patent WO-2019061759-A1 (WO)
Title: Device for crushing and grinding kitchen waste
Inventor: XUE QINLEI
IPC: B02C18/32
Filed: 2017-11-22
Abstract: Provided is a device for crushing and grinding kitchen waste, the device comprising an upper housing (1), a lower housing (2) and a fixed knife disc (3), wherein the interior of the upper housing (1) and the interior of the lower housing (2) form a working chamber; a top end of the upper housing (1) is provided with a feed port (11); the bottom of the lower housing (2) is provided with a waste discharge port (21); the fixed knife disc (3) is fixed in the working chamber and divides the working chamber into a crushing chamber and a grinding chamber; an upper surface of the fixed knife disc (3) is provided with a first serrated cutter head (31), and a lower surface thereof is provided with a first grinding face (32); a movable knife disc (4) is arranged in the crushing chamber; upper and lower surfaces of the movable knife disc (4) are provided with second serrated cutter heads (41); the first cutter head (31) and the second cutter head (41) on the lower surface of the movable knife disc (4) are arranged in a staggered manner; a movable grinding disc (5) is arranged in the grinding chamber; an upper surface of the movable grinding disc (5) is provided with a second grinding face (51); a second gap is formed between the first grinding face (32) and the second grinding face (51); the top end of the upper housing (1) is provided with a first driving motor (6), which drives drive the rotation of the movable knife disc (4); and the bottom of the lower housing (2) is provided with a second driving motor (7), which drives drive the rotation of the movable grinding disc (5). With the device, a grinding treatment can be carried out on kitchen waste after same is crushed a second time, so as to obtain small crushed waste particles.
Patent WO-2019100425-A1 (WO)
Inventor: XIE HUAFEI
IPC: H01L21/336
Filed: 2017-11-29
Abstract: 一种薄膜晶体管的制备方法，包括选定一衬底（11），并在所选衬底（11）的上方，依序由下往上分别形成底部栅极（12）、栅极绝缘层（13）和源漏极（14）；其中，所述底部栅极（12）和所述源漏极（14）均采用功函数可调的导电金属氧化物为金属导电极；冲洗及吹干所选衬底的源漏极（14），且待对吹干后的源漏极（14）在预定光照条件下进行一定时间臭氧清洗后，对臭氧清洗后的源漏极（14）以氧气等离子体轰击一段时间，并进一步在氧气等离子体轰击后的源漏极（14）上方形成有由碳材料制备出的有源层（15）；待有源层（15）制备完成后，并在有源层（15）上方形成钝化层（16）。该方法能够通过调控导电金属与有源层（15）的接触面功函数，减小接触电阻，改善碳基薄膜晶体管器件性能。
Patent WO-2019113824-A1 (WO)
Title: 柔性触摸显示装置及触摸补偿方法
Inventor: CHEN CHAO
IPC: G09F9/30
Filed: 2017-12-13
Abstract: 一种触摸补偿方法，应用于一柔性触摸显示屏中，触摸补偿方法包括步骤：通过柔性触摸显示屏中的若干侦测单元（12）分别侦测柔性触摸显示装置（100）的每一发光显示器件（11）的电参数而产生相应的侦测信号；根据每一侦测单元（12）产生的侦测信号判断每一发光显示器件（11）的电参数是否发生变化以及判断变化量是否满足预设条件；确定电参数的变化量满足预设条件的至少一个发光显示器件（11）所对应的至少一个目标像素点（P1），并根据至少一个目标像素点（P1）确定需要进行补偿的至少一个目标触摸单元（21）；以及对至少一个目标触摸单元（21）进行触摸补偿。一种柔性触摸显示装置（100）。柔性触摸显示装置（100）及触摸补偿方法，能够有效侦测弯折区域并进行触摸补偿。
Patent WO-2019056600-A1 (WO)
Title: Synchronous data processing apparatus and method for multiple print heads, and printer
Inventor: HAN YESHI
IPC: B41J29/393
Filed: 2017-12-14
Abstract: A synchronous data processing apparatus and method for multiple print heads, and a printer. Said apparatus is applied to a field programmable gate array device, the field programmable gate array device including a memory, and includes: a data verification module (101) for acquiring print data and verifying the print data; a data parsing module (102) for acquiring the verified print data, and parsing the verified print data, so as to generate parsed data; a data cache module (103) for caching the parsed data in the memory; a data splitting and distributing module (104) for acquiring the cached parsed data, and splitting the cached parsed data into data blocks, the number of the data blocks being equal to the number of print heads; and a print head driving module (105) for receiving the data blocks and driving the print heads to print data streams. The apparatus, method, and printer ensure that data can be processed synchronously when a printer has multiple print heads, enabling a printed pattern to be neat and free of burrs.
Patent WO-2018196405-A1 (WO)
Title: 一种防变形水洗枕芯
Inventor: ZHANG HUA
IPC: A47G9/10
Filed: 2017-12-18
Abstract: 一种防变形水洗枕芯，包括枕芯壳（1）和枕芯（2），枕芯（2）包括表层（21）和里层（22），表层（21）和里层（22）中间设有若干叠放在一起的涤纶片状棉层（23），若干涤纶片状棉层（23）上开有通道孔（24），通道孔（24）沿涤纶片状棉纵向中线排开，通道孔（24）的孔迹由上而下呈"〈"或"〉"型，通道孔迹数为3-5个。有效克服了枕芯水洗过程中缠绕、变型、收缩、断棉等现象，实现了枕芯的可水洗性。
Patent WO-2018196407-A1 (WO)
Title: 一种资源配置方法和基站
Inventor: LIAO LIYU
IPC: H04W72/04
Filed: 2017-12-19
Abstract: 本发明公开了一种资源配置方法和基站，基于基站提供的上行服务所服务的终端数的平均值N a和所述基站提供的所述上行服务所服务的终端数的峰值N p，配置周期CSI资源；基于所述终端业务QoS需求，确定所述终端资源需求；当基于一终端的终端业务QoS需求不能够确定所述终端的终端资源需求时，基于所述终端的当前移动速度，确定所述终端资源需求；基于所述周期CSI资源的占用情况及所述终端资源需求，确定所述终端的终端CSI资源配置，从而解决了现有技术中在系统中终端用户容量变化时，调配系统资源的流程复杂，不能灵活适应系统中终端用户容量的变化，造成系统资源浪费，降低用户体验的技术问题。
Patent WO-2019071832-A1 (WO)
Title: Method, storage medium, device, and system for obtaining activity portal status
Inventor: WANG GANG
IPC: H04N21/262
Filed: 2017-12-20
Abstract: The present invention discloses a method, a storage medium, a device, and a system for obtaining an activity portal status and relates to the technical field of live broadcast application development. The method comprises: a user end initiating a request to a server to configure an interface for a network, obtaining and saving activity portal related information, wherein the activity portal related information comprises status information of an activity portal and start and end times of the activity portal; after converting and processing the activity portal related information, saving the activity portal related information locally; the user end displaying a current activity portal according to the status information of the obtained activity portal; and whenever a user clicks into the activity portal, the user end obtaining the current local time, comparing the current local time with the start and end times of the activity portal, and obtaining, according to a comparison result, a corresponding activity portal status, so as to implement redirecting of a corresponding page. The present invention can obtain the status of an activity portal in real time and reduce the number of requests for an interface. Thus, the present invention provides an improved user experience.
Patent WO-2018121448-A1 (WO)
Title: 移动机器人的拓扑地图创建方法、导航方法、可编程设备及计算机可读介质
Inventor: YANG YONG
IPC: G01C21/34
Filed: 2017-12-22
Abstract: 移动机器人的拓扑地图创建方法、导航方法、可编程设备及计算机可读介质，创建方法包括：S1：根据获取的移动机器人当前位置的环境信息构建当前区域；S2：判断当前区域是否符合子区域划分条件，如果是则进入步骤S3，如果否进入步骤S4；S3：将当前区域的划分为包括当前位置子区域在内的至少两个通过边界相连的子区域，然后进入步骤S5；S4：将当前区域作为当前位置子区域，然后进入S5；S5：在当前位置子区域创建局部地图并存储；S6：判断是否存在未创建局部地图的子区域，如果是则进入步骤S7，如果否则进入步骤S8；S7：移动机器人运动至未创建局部地图的子区域，更新当前位置信息后返回步骤S1；S8：以子区域为节点、边界为边创建拓扑地图。
Patent WO-2019000878-A1 (WO)
Title: Order group allocation method and device
Inventor: CHEN JINQING
IPC: G06Q10/08
Filed: 2017-12-26
Abstract: An order group allocation method and device. An order group allocation method, comprising: determining, according to matching scores between order groups to be processed and delivery persons, an order group with the lowest matching score corresponding to each delivery person (102); dividing, according to the order group with the lowest matching score corresponding to each delivery person, the order groups to be processed and the delivery persons into a plurality of non-intersecting sub-combinations (103), non-intersecting meaning that the sub-combinations divided have no overlapping order groups to be processed and have no overlapping delivery person; and allocating, with regard to each sub-combination divided, the order groups to be processed according to a specified order group allocation process, so as to allocate the order groups to be processed in each sub-combination to a delivery person in a corresponding sub-combination (104). The present method can improve the allocation efficiency of order groups.
Patent WO-2019119500-A1 (WO)
Inventor: LIU CHANGQING
IPC: B61F1/00
Filed: 2017-12-28
Abstract: A carriage floor structure of a railway train and a railway train having the same. The carriage floor structure comprises: a floor panel (1); side beams (2) connected to two sides of the floor panel (1) and extending in a length direction of a carriage; and two end connection frames (3) respectively arranged at two ends thereof in the length direction of the carriage and installed at a bottom surface of the floor panel (1). An inner side of each of the end connection frames (3) is provided with a buffer beam (4) extending in the length direction of the carriage. An end portion of the buffer beam (4) is connected to the inner side of the end connection frame (3). A top surface of the buffer beam (4) is fixed to the bottom surface of the floor panel (1). A force applied to the end connection frame (3) of the carriage floor structure is sequentially transferred to a coupler beam (53), the buffer beam (4), the floor panel (1) and the side beam (2). The invention changes a force transfer manner of a conventional structure, and transfers a force applied to the end connection frame (3) to the side beam (2) by means of multiple transfers, thereby preventing breakage at a force-receiving point, and enhancing strength, stability and safety of equipment.
Patent WO-2018166276-A1 (WO)
Title: 文字区域定位方法和装置、计算机可读存储介质
Inventor: WANG YONGLIANG
IPC: G06K9/20
Filed: 2017-12-29
Abstract: 一种文字区域定位方法和装置、计算机可读存储介质，涉及图像处理领域。该文字区域定位方法包括：根据原始图像获取方差图（501）；获取方差图的边缘图像（502）；若边缘图像中相邻两条边缘线中位置相对的边缘点之间距离的差值在预定距离差范围时，则确定相邻两条边缘线之间的区域为文字区域（503）。通过这样的方法，能够利用文字区域中文字高度相似的特点，根据边缘图像中边缘线之间的距离确定文字区域，不会由于文字笔画粗度变化造成影响，适用于各种不同的字体，且能够避免图像复杂的像素变化情况对定位造成影响，提高文字区域定位的准确性。
Patent WO-2018141190-A1 (WO)
Title: 参数发送、资源确定方法及装置、基站和终端
Inventor: GOU WEI
IPC: H04W72/04
Filed: 2017-12-29
Abstract: 一种参数发送方法包括：确定第一指定参数和第二指定参数中至少之一，其中，第一指定参数用于指示在预定候选信道资源的基础上所增加或减少的资源数量，第二指定参数用于指示终端数据传输需要的信道资源所包含的资源数量，以及预定候选信道资源包括为所述终端预先配置的一份或多份候选信道资源；以及通过第一信令将第一指定参数和第二指定参数中至少之一发送给终端。还公开了一种参数发送装置、资源确定方法、资源确定装置、基站和终端。
Patent WO-2018153199-A1 (WO)
Title: 调整触摸屏灵敏度的方法和装置
Inventor: CHANG JIANPENG
IPC: G06F3/041
Filed: 2018-01-23
Abstract: 一种调整触摸屏灵敏度的方法和装置，其中，所述方法包括：当触摸屏灵敏度异常时，获取第一触摸屏覆盖特征信息；根据第一触摸屏覆盖特征信息查询预设的光感值变化关系表，获取第一光感均值变化值；按照预设的调整策略将所述第一光感均值变化值进行调整后，根据调整后的第一光感均值变化值查询预置的灵敏度参数对照表，获取与调整后的第一光感均值变化值相对应的灵敏度参数值；根据与所述调整后的第一光感均值变化值相对应的灵敏度参数值对所述触摸屏的灵敏度进行调整。
Patent WO-2019153237-A1 (WO)
Inventor: TANG HAI
IPC: H04W56/00
Filed: 2018-02-09
Abstract: 本发明实施例提供了一种配置同步载波的方法、设备及计算机存储介质；该方法可以包括：基于配置信息获取第一载波集合；其中，所述第一载波集合中包括至少一个候选载波；从所述第一载波集合的候选载波中选取同步载波。从而能够实现多载波传输中同步载波的设置。
Patent WO-2018233315-A1 (WO)
Title: Temperature alerting method for smart wristband
Inventor: ZHANG RONGRONG
IPC: G08B21/18
Filed: 2018-03-01
Abstract: A<b> temperature alerting </b>method for <b>smart wristband</b>. The smart <b>wristband comprises </b>a watchband and a body; the body comprises a motherboard and a display screen; the motherboard is provided with a processor. The smart <b>wristband </b>further comprises a <b>temperature </b>sensor (301). The method comprises: step 1: storing a first <b>temperature </b>interval, a second <b>temperature </b>interval, a third <b>temperature </b>interval, and a four <b>temperature </b>interval in a processor, the first <b>temperature </b>interval being a normal <b>human body temperature </b>interval, the second <b>temperature </b>interval being an abnormal <b>human body temperature </b>interval, the third <b>temperature </b>interval being a normal<b> ambient temperature </b>interval, and the four <b>temperature </b>interval is an abnormal <b>ambient temperature </b>interval; and the third <b>temperature</b> interval being a <b>temperature </b>interval excluding the first <b>temperature </b>interval and the second <b>temperature </b>interval. By means of the technical solution, on one hand, a user can determine own body temperature, and then make prevention measures for cold and fever; and on the other hand, external<b> temperature </b>can be well measured, so that alarm and help calling information can be issued, and help calling processing can be made in time.
Patent WO-2018161850-A1 (WO)
Inventor: DAO NGOC DUNG
IPC: H04W28/02
Filed: 2018-03-02
Abstract: A network data analytics (NWDA) function and method of policy optimization in a communication network are provided. The NWDA performs data analytics on the communication network traffic, and includes communication interfaces to connect to other network elements in the communication network. The method comprises the NWDA function configured to receive a request for a policy input, send instructions to network elements to obtain network performance measurement data, receive the measurement data from the network elements, and transmit a policy input based on the received measurement data.
Patent WO-2019174043-A1 (WO)
Title: Cof tape carrier and processing method therefor, and cof tape carrier processing apparatus
Inventor: QIN JIEHUI
IPC: G02F1/13
Filed: 2018-03-16
Abstract: Disclosed is a COF carrier tape (100), comprising at least one COF board (10), wherein each of the COF boards comprises a COF substrate (11) and a reinforcing board (12) laminated on the COF substrate, and the reinforcing board (12) is located in a reinforcing zone (S1) on the COF substrate. Further disclosed are a COF tape carrier processing apparatus (200) and a method for processing a COF tape carrier. With the reinforcing board, the reinforcing zone has a higher strength, so that electronic elements such as a capacitor and a resistor can be directly carried on the COF board, and thus, the display panel and a display mainboard can be directly connected by the COF board without using the FPC board, thereby reducing the manufacturing procedures of the display and the risk of defective products.
Patent WO-2019127930-A1 (WO)
Inventor: LIU RUOPENG
IPC: H04L25/02
Filed: 2018-03-21
Abstract: L'invention concerne un procédé et un appareil d'estimation de canal semi-aveugle. Le procédé d'estimation de canal semi-aveugle comprend : étape S1, acquisition de données reçues par une extrémité de réception et contenant une première séquence d'apprentissage ; étape S2, selon les données contenant des premières données d'apprentissage et une première séquence d'apprentissage connue, réalisation d'une estimation des moindres carrés du canal afin d'obtenir une matrice de paramètres de canal ; étape S3, selon la matrice de paramètres de canal et un algorithme de détection des moindres carrés, détection de la première séquence d'apprentissage afin d'obtenir des données d'estimation ; et étape S4, utilisation des données d'estimation en tant que deuxième séquence d'apprentissage et remplacement de la première séquence d'apprentissage par la deuxième séquence d'apprentissage, puis exécution cyclique des étapes S2 à S3 sur la deuxième séquence d'apprentissage, sans arrêter la circulation jusqu'à ce qu'une matrice de paramètres de canal obtenue la dernière fois soit la même qu'une matrice de paramètres de canal obtenue cette fois, de façon à estimer une matrice de paramètres de canal. Au moyen de la solution technique, la présente invention peut estimer une matrice de paramètres de canal aléatoire dans un système de multiplexage superposé à antennes multiples et présente de meilleures performances que celles de l'estimation des moindres carrés de canal basée sur une séquence d'apprentissage.
Patent WO-2019161599-A1 (WO)
Inventor: WU XUHONG
IPC: H04L12/58
Filed: 2018-04-09
Abstract: Disclosed is an IM information protection method, comprising the following steps: receiving a sending request triggered by a first chat window of a sending end, acquiring IM information in the sending request, and establishing a cloud chat window corresponding to the IM information; determining, according to associated information of the first chat window, whether a time-limited chat mode of the cloud chart window is activated; if the time-limited chat mode is activated, encrypting the IM information in the cloud chat window according to a preset encryption rule; sending the encrypted IM information to a second chat window of a receiving end, and monitoring the read state of the IM information in the second chat window; and deleting the IM information in the first chat window and/or the second chat window upon detecting that the IM information is read. Also discloses are an IM information protection apparatus and device, and a computer storage medium.
Patent WO-2019095628-A1 (WO)
Title: 一种高机械强度磁性强碱阴离子交换树脂及其制备方法
Inventor: SHUANG CHENDONG
IPC: B01J20/30
Filed: 2018-04-20
Abstract: 一种高机械强度磁性强碱阴离子交换树脂及其制备方法，属于树脂材料领域。其制备方法为:将传统强碱阴离子交换树脂加入到三价铁盐和二价铁盐的混合溶液中，吸附有铁盐的树脂再与氨水混合，从而使树脂结构中含有四氧化三铁纳米粒子。然后，将含有四氧化三铁纳米粒子的树脂加入到溶解有硅烷偶联剂的醇溶液中进行反应，使得树脂表面含有致密的二氧化硅包裹层，得到了一种高机械强度的磁性强碱阴离子交换树脂。合成后的磁性树脂机械强度显著提高，磨后圆球率可达95％以上，且具有较强的磁性、较高的湿真密度和沉降速率，以及较大的强碱阴离子交换容量。此外，该树脂还具有一定的耐酸性，可广泛用于水和废水中阴离子污染物的去除。
Patent WO-2018201923-A1 (WO)
Inventor: ZHOU QINXIONG
IPC: G06Q40/08
Filed: 2018-04-23
Abstract: L'invention concerne un procédé d'attribution d'un contrat d'orphelin consistant à : acquérir des noms de région de régions administratives et des frontières régionales des noms de région sur un plan électronique; acquérir des données de politique d'une pluralité de contrat orphelins correspondant aux noms de région selon les frontières régionales, les données de politique comprenant une identification de politique; analyser les données de politique pour obtenir des types de service correspondant aux contrat orphelins; interroger des identifications de ventes d'assurance dans les régions administratives du métier dans les types de service; et envoyer les identifications de politique des contrats d'orphelins ayant le même type de service à un terminal correspondant à l'homme du métier d'identification de ventes d'assurance dans le type de service.
Patent WO-2018205931-A1 (WO)
Title: Étapes de fourniture de service à l'aide de tranches et de définitions associées
Inventor: SENARATH NIMAL GAMINI
IPC: H04L12/24
Filed: 2018-05-08
Abstract: L'invention concerne un système de gestion d'un réseau comprenant un domaine opérateur. Le système comprend un système hiérarchique de fonctions de gestion; et un catalogue de services respectif associé à chaque fonction de gestion. Le catalogue de services mémorisant des informations de services qui peuvent être fournis par la fonction de gestion à au moins une fonction de gestion de niveau supérieur.
Patent WO-2019184084-A1 (WO)
Title: 一种老年人助行器及其控制方法
Inventor: WANG TIANLEI
IPC: A61H3/04
Filed: 2018-06-01
Abstract: 一种老年人助行器及其控制方法，通过利用电控的运动机构对助行器进行运动的驱动，使得助行器能够推动老人进行行走，从而能够减轻老人的行走负担，同时，通过控制机构对作用于其上的压力的检测，不仅能够使主控模块对助行器的运动方向进行灵活的控制，并且能够及时使助行器进行自锁，使得助行器能够及时停止运动，从而保证老人的安全。
Patent WO-2019196214-A1 (WO)
Title: Multimodal synchronous phasor-based power system oscillation tracing method and system
Inventor: XIE XIAORONG
IPC: G01R31/08
Filed: 2018-07-03
Abstract: Disclosed is a multimodal synchronous phasor-based power system oscillation tracing method and system. The system comprises: multiple multimodal phasor measurement units used for extracting all oscillation modes of a bus voltage and currents of all phases of a line, obtaining corresponding phasors, obtaining positive, negative and zero-sequence phasors in each oscillation mode and corresponding complex power, and marking a synchronous time scale to obtain phasor data; a multimodal phasor concentrator used for communicating with the multiple multimodal phasor measurement units and storing the phasor data; and a multimodal oscillation wide area monitoring/analysis and tracing platform used for receiving the phasor data transmitted by the multimodal phasor concentrator, and performing resynchronization on the phasor data according to the time scale, so as to store the phasor data in a real-time or historical database to implement multimodal tracing. The system can implement accurate power system multimodal oscillation tracing, the physical meaning is clear, and online execution is easy and simple to implement.
Patent WO-2019011233-A1 (WO)
Title: Control system of vacuum cleaner motor, vacuum cleaner, and control method
Inventor: KONG ZHAO
IPC: A47L9/00
Filed: 2018-07-10
Abstract: Disclosed is a control system of a vacuum cleaner. The vacuum cleaner comprises a dust cylinder and a suction tube connected to the dust cylinder. The control system comprises: a controller driving the motor via an electric signal; a driving circuit of a power supply for responding to an instruction of the controller and providing the motor with different PWM values; and a current detection module used for detecting the current of the motor. The controller adjusts the power supply to allow same to drive the motor to work normally with a first PWM value, when the current detection module detects that the current of the motor has been less than a set current value for a first time period, the controller issues to the driving circuit a control signal for increasing the PWM value and reducing the PWM value until an Nᵗʰ cycle, and after the Nᵗʰ cycle, the driving circuit drives the motor to work normally with the first PWM value. The control system is capable of automatically removing an obstacle stuck in the suction tube of the vacuum cleaner and obviates the need for manual removal of the obstacle or frequent pressing of a switch, thus increasing the degree of comfort for a user.
Patent WO-2020010619-A1 (WO)
Title: Data transmission method, terminal device, and network device
Inventor: YOU XIN
IPC: H04W28/02
Filed: 2018-07-13
Abstract: Embodiments of the present application provide a data transmission method, a terminal device, and a network device. In a DC scene, when a QoS flow needs to be distributed at a core network side, a master node device and a slave node device can achieve interaction of a mapping relationship between the QoS flow and a data radio bearer (DRB), and thus, it can be ensured that uplink data is transmitted over the QoS flow. In the method, the terminal device is simultaneously connected to the master node device and the slave node device. The method comprises: the terminal device obtains first data that needs to be transmitted over a first QoS flow; the terminal device transmits the first data over the first QoS flow according to a first mapping relationship and/or a second mapping relationship, wherein the first mapping relationship represents a corresponding relationship between the first QoS flow and the DRB corresponding to the master node device, and the second mapping relationship represents the corresponding relationship between the first QoS flow and the DRB corresponding to the slave node device.
Patent WO-2019015638-A1 (WO)
Title: Olefin polymerization catalyst comprising cyclotriveratrylene and derivatives thereof
Inventor: HUANG TING
IPC: C08F4/00
Filed: 2018-07-19
Abstract: Provided is a Ziegler-Natta type catalyst system for olefin polymerization comprising at least one compound of formula (I) as (i) an internal electron donor, (ii) an external electron donor, or (iii) both, wherein M 1, M 2, M 3, M 4, M 5, M 6, M 1', M 2', M 3', M 4', M 5', M 6' are each independently selected from the group consisting of hydrogen, hydroxyl, amino, aldehyde group, carboxyl, acyl, halogen atoms, -R 1 or -OR 2. wherein R 1 and R 2 are each independently an unsubstituted C 1-C 10 hydrocarbon group or a C1-C 10 hydrocarbon groups substituted with a substituent selected from a hydroxyl group, an amino group, an aldehyde group, a carboxyl group, an acyl group, a halogen atom, a C 1-C 10 alkoxy group and a hetero atom. When any two adjacent groups on the same phenyl ring in M 1-M 6 and M 1'-M 6' are each independently selected from R 1 and -OR 2, the two adjacent groups may be optionally joined to form a ring, provided that M 1, M 2, M 3, M 4, M 5, M 6, M 1', M 2', M 3', M 4', M 5', M 6' are not hydrogen at the same time.